That's a whole lot of sparkle! Maria Menounos received an eye-popping diamond engagement ring from her love of 19 years, Keven Undergaro, on Wednesday, March 9, and Us Weekly has all the details on the rock.

Crafted by Jean Dousset, the sparkler contains an ideal round brilliant-cut center stone set in a halo setting boosted with 220 accent diamonds.

Keven Undergaro proposed to Maria Menounos with an eye-popping diamond engagement ring on Wednesday, March 9.The Howard Stern Show

"I am truly flattered to have been included to create this ring, nineteen years in the making," said Dousset, who's also designed rings for Amy Adams and Eva Longoria, in a statement.

Plus, Dousett revealed that Undergaro added an extra-special touch. "Keven chose to add personal elements to the ring by including a Signature Stone hidden underneath," the designer shared. "The choice of color and origin of the stone adds thoughtful detail only he and Maria will know and see."

Undergaro popped the question while he and Menounos were visiting 'The Howard Stern Show.'The Howard Stern Show

Undergaro popped the question while he and Menounos were visiting The Howard Stern Show. Shortly after, the brunette beauty Instagrammed a shot with her new fiancé, captioning it, "omg this happened!!!!!!! thank you @sternshow @bethostern so much for everything I'm in utter shock! And thank u my love for 19 amazing years. Can't believe we are engaged!!!!"

What do you think of Menounos' engagement ring? Tweet with @UsWeekly using the hashtag #stylebyUs!